Carrier insert bar assembly with securement pin

ABSTRACT

An insert bar assembly for a hitch-rack carrier comprises a self-locating securement pin. The insert bar assembly can comprise an elongate hitch-attachment bar which in turn comprises a hitch-receiver insert portion located at an insertable end of the bar. The assembly can include a flexible securement pin or a rigid securement pin resiliently joined to the bar at a fixed distance from the engagement end of the pin. The assembly accommodates repetitive, same location positioning of the engagement end of the pin at a pin-tip facing surface on the bar in the pin-secured configuration of the insert bar assembly.

CROSS-REFERENCE TO RELATED APPLICATION

This application claims priority to U.S. Provisional Application No.61/513,979, filed Aug. 1, 2011, which is fully incorporated by referenceherein.

FIELD OF THE TECHNOLOGY

The present disclosure relates generally to an insert bar assembly for ahitch-rack load carrier. More specifically, embodiments within thisdisclosure relate to an insert bar assembly for a hitch-rack loadcarrier having a self-locating securement pin for repetitive, samelocation positioning, of an engagement end of the pin.

BACKGROUND OF THE TECHNOLOGY

Safely transporting sports equipment is a concern for many sportsenthusiasts. For example, transporting a bicycle by automobile has manysafety concerns. If a bicycle rack were to become disconnected from avehicle while driving it could damage the rack and a bicycle beingtransported and affect the safety of other motorists. One way to securea rack to a vehicle is to insert an insert bar into a hitch on thevehicle and insert a pin through corresponding holes in the insert barand the hitch. Depending on the strength of the person attaching therack, the weight of the rack, and other environmental conditions, it canbe difficult to secure the rack with the pin. Various embodiments of thetechnology enable a pin to easily and securely attach a rack to a hitch.

Sometimes a receiver on a vehicle hitch is larger than the insertportion of a carrier rack. For example, a hitch-rack load carrier may be1.25 square inches at its lead-in end, while the corresponding apertureon the hitch might be 2 square inches. Various embodiments of thetechnology pertain to a hitch assembly with an expander to enable asuitable connection between a hitch and a carrier. Various embodimentsof the technology pertain to an adapter assembly which can enable asuitable connection between a hitch and a carrier.

BRIEF DESCRIPTION OF THE DRAWINGS

Implementations of the present application will now be described, by wayof example only, with reference to the attached figures, wherein:

FIG. 1 is a perspective view of an insert bar for a hitch-rack loadcarrier in accordance with an example embodiment;

FIG. 1A is an internal view of an insert bar for a hitch-rack loadcarrier in accordance with an example embodiment

FIG. 2 is a perspective view of an insert bar for a hitch-rack loadcarrier in accordance with an example embodiment;

FIG. 3 is a perspective view of an insert bar for a hitch-rack loadcarrier in accordance with an example embodiment;

FIG. 4 is a perspective view of an insert bar for a hitch-rack loadcarrier in a locked configuration in accordance with an exampleembodiment;

FIG. 5 is a perspective view of an insert bar for a hitch-rack loadcarrier in accordance with an example embodiment;

FIG. 6 is a side view of an insert bar for a hitch-rack load carrier inaccordance with an example embodiment;

FIG. 7 is a cut-away side view of an insert bar for a hitch-rack loadcarrier in accordance with an example embodiment;

FIG. 8 is a side view of an insert bar for a hitch-rack load carrier inan expanded configuration accordance with an example embodiment;

FIG. 9 is a cut-away side view of an insert bar for a hitch-rack loadcarrier in an expanded configuration accordance with an exampleembodiment;

FIG. 10 is a perspective view of an adapter assembly for an insert barassembly of a hitch-rack load carrier in accordance with an exampleembodiment;

FIG. 11 is a perspective view of an insert bar for a hitch-rack loadcarrier received within a hitch in accordance with an exampleembodiment;

FIG. 12 is a cross-section of a hitch-rack load carrier received withina hitch in accordance with an example embodiment; and

FIG. 13 is another cross-section of hitch-rack load carrier receivedwithin a hitch in accordance with an example embodiment.

DETAILED DESCRIPTION

It will be appreciated that for simplicity and clarity of illustration,where appropriate, reference numerals have been repeated among thedifferent figures to indicate corresponding or analogous elements. Inaddition, numerous specific details are set forth in order to provide athorough understanding of the implementations described herein. However,it will be understood by those of ordinary skill in the art that theimplementations described herein can be practiced without these specificdetails. In other instances, methods, procedures and components have notbeen described in detail so as not to obscure the related relevantfunction being described. Also, the description is not to be consideredas limiting the scope of the implementations described herein.

Within the technology, an insert bar assembly for a hitch-rack loadcarrier can comprise a self-locating securement pin. The securement pincan be configured to have a tip-fixed position in a pin-securedconfiguration of the insert bar assembly. The insert bar assembly canincorporate an elongate hitch-attachment bar having a hitch-receiverinsert portion which is located at an insertable end of the bar. Theassembly can include a flexible securement pin or a rigid securement pinwhich is coupled via a hinge-device or other suitable means to the barat an unchanging distance from the engagement end of the pin. Theassembly can be configured to enable or accommodate repetitive, samelocation positioning of the engaging end of the securement pin on thebar 104 when the assembly is in a pin-secured configuration of theinsert bar assembly.

Within the technology, a hitch assembly can be configured with anexpander to enable a suitable connection between a hitch and a carrier.

Within the technology an adapter assembly can be configured to enable asuitable connection between a hitch and a carrier.

Referring to FIG. 1, a perspective view of an insert bar assembly for ahitch-rack load carrier in accordance with an example embodiment isillustrated. The illustrated assembly 100 is not secured to the hitch150. As shown, the insert bar assembly 100 can comprise a self-locatingpin 102 for securing the insert bar assembly 100 of a carrier (notshown) to a hitch 150 of a vehicle (not shown). The pin can be made offlexible or inflexible material. The insert assembly 100 can furthercomprise an elongate hitch-attachment bar 104 with a hitch-receiverinsert portion 106 located at an insertable end 114 of the bar 104. Theinsertable end 114 can be configured to be inserted into a receiving endof the hitch 150. The insert assembly 100 can further comprise asecurement pin 102 coupled to the bar 104 at a fixed distance 110 froman engagement end 112 of the pin 102 which accommodates or enablesrepetitive, same location positioning of the engagement end 112 of thepin when the assembly 100 is in a pin-secured configuration. The tip 116of the securement pin 102 can be biased towards the hitch attachment bar104 via a spring or other suitable means located within a space interiorof the insert bar assembly 100. The attachment assembly 100 and therebythe carrier rack (not shown) can be releasably attached to the hitch 150when the engagement end 112 of the pin 102 is received by an aperture160 in the hitch 150. The securement pin 102 can be resiliently joinedto the bar 104 such as by a flexible joint or other suitable mechanismwhich enables the securement pin 102 to flex toward bar 104. Thesecurement pin 102 can be coupled to the bar 104 via a hinge (not shown)or other suitable means to enable it to be laterally translatable withrespect to the bar 104. The pin 102 can thus be pivotally coupled to thebar 104 at a fixed distance 110 from an engagement end 112 of the pin102. The engagement end 112 of the pin 102 can comprise a pin-tip 116which may engage a pin-tip engagement surface 120 of the bar 104 or apin-tip engagement area (e.g. 160) on a hitch or both. The pin-tipengagement surface 120 can include a pin-tip receiver 122 which can bean intent or hole or depression in the bar 104. As illustrated in FIG.1, the elongate hitch-attachment bar 104 can comprise a hitch-receiverinsert portion 106 located at an end 114 of the bar 104 insertable intoa hitch 150.

Referring to FIG. 1A, an alternate perspective view of an insert barassembly for a hitch-rack load carrier in accordance with an exampleembodiment is illustrated. As was the case with FIG. 1, the illustratedassembly 100 is not secured to the hitch 150. The insertable end 114 ofthe attachment bar 104 can be configured to be fit within a hitch 150 ona vehicle (not shown). The insert assembly 100 can further comprise asecurement pin 102 coupled to the bar 104 at a fixed distance 110 froman engagement end 112 of the pin 102 which accommodates or enablesrepetitive, same location positioning of the engagement end 112 of thepin when the assembly 100 is in a pin-secured configuration. The tip 116of the securement pin 102 can be biased towards the hitch attachment bar104 via a spring or other suitable means located within a space 201interior of the insert bar assembly 100 (see FIG. 2). A pin-tip point ofcontact 130 can be located on the insertable end 114 of the bar 104 andthe engagement end 112 of the pin 102, with a pin-tip 116 abuttinglyengaging the pin-tip point of contact 130 located on the insertable end114 of the bar 104. The pin-tip point of contact 130 located on theinsertable end 114 of the bar 104 can consist of a recess, detent,indent, depression, concave area, convex area or flat surface (as shownin FIG. 1A).

Referring to FIG. 2, an internal perspective view showing of an insertbar for a hitch-rack load carrier in accordance with an exampleembodiment is illustrated. The illustrated assembly 100 is not securedto the hitch 150. As illustrated in FIG. 1, the insert bar assembly cancomprise a self-locating securement pin 102 having a tip-fixed position.The assembly 100 can contain an elongate hitch-attachment bar 104 whichcomprises a hitch-receiver insert portion 106 located at ahitch-insertable end 114 of the bar 104. The assembly can also contain arigid or flexible securement pin 102 which can be pivotally coupled tothe bar 104 at a fixed distance 110 from an engagement end 112 of thepin 102. The assembly 100 can thereby accommodate repetitive, samelocation positioning of the engagement end 112 of the pin 102 when in apin-secured configuration 302 of the insert bar assembly 100. Theassembly can further comprise a biasing member 206 which can be engagedupon the securement pin 102. The biasing member, which can consist of aspring or other suitable means, can bias the pin 102 toward apin-secured configuration. With further reference to FIG. 2, theassembly 100 can comprise a lock assembly 202 to prevent unauthorizedremoval of the assembly from the hitch 150. The lock assembly caninclude a cap cover 204 which can cover the securement pin 102 in apin-secured configuration, thereby preventing unauthorized movement ofbar assembly 100 when the assembly is in a pin-secured configuration andattached to a hitch 150.

Referring to FIG. 3, a perspective view of an insert bar assembly for ahitch-rack load carrier in accordance with an example embodiment isillustrated. The assembly 100 is shown in a pin-secured configuration302. The pin 102 is shown in a tip-fixed position 300 relative theassembly 100 as in the other Figs. However the tip-fixed position 300 inFIG. 3 corresponds to the pin-secured configuration 302 illustrated.Although the assembly 100 and the pin 102 are in a pin-securedconfiguration 302, the assembly 100 is not in a locked configurationbecause the cap-cover 204 of the lock assembly 202 is not shielding thecoupled end 128 (of the securement pin 102 from contact.

Referring to FIG. 4, a perspective view of an insert bar assembly for ahitch-rack load carrier in accordance with an example embodiment isillustrated. The assembly 100 is shown in a pin-secured configuration302 and in a locked configuration 400. The pin 102 is shown in atip-fixed position 300 relative the assembly 100 as in the other Figs.As illustrated in FIG. 3, the tip-fixed position 300 illustrated in FIG.4 corresponds to a pin-secured configuration 302. The assembly 100 andthe pin 102 are in a pin-secured configuration 302, and the assembly isin a locked configuration 400 because the cap-cover 204 of the lockassembly 202 shields the coupled end 116 (not visible) of the securementpin 102 from contact. The assembly 100 can comprise a lock assembly 202.The assembly 100 or the lock assembly, or both, can be configured toallow pivoting of the cap cover 204 away from the bar 104 only, forexample, if a key is inserted into a lock within the assembly 100 or ifa combination is entered into a lock within the assembly 100.

Referring to FIG. 5, a perspective view of an insert bar assembly for ahitch-rack load carrier in accordance with an example embodiment isillustrated. The insert bar assembly illustrated includes a leveraged,diagonally directed expander 500 for securing the insert bar assembly100 in a receiver 150 of a hitch of a vehicle (not shown). The assembly100 comprises an elongate hitch-attachment bar 104 which has a length,width and height, and a hitch-receiver insert portion 106 which islocated proximate a lead-in end 114 of the bar 104. In order toaccommodate attachment of the assembly 100 to a hitch which is largerthan the insert portion 106 of the bar 104, the assembly 100 includes anexpander 500. The expander 500 can be configured to extend and retractin relation to an exterior surface (e.g., 502) of the hitch attachmentbar 104 in response to relative motion of the expander 500 on the bar104. The expander 500 can be moved by a leveraging rocker-arm 504 on theassembly 100. The leveraging rocker-arm 504 can inter-couple theexpander 500, the hitch-attachment bar 104 and a manually operableactuator 506, such as, for example, a knob, via a drive arm 512. Therocker-arm 504 can be configured for moving the expander 500 along thehitch-receiver insert portion 106 in response to manipulation of theactuator 506. In order to move the expander 500, a leveraging rocker-arm504 pivots in a plane perpendicular to the exterior surface 502 of thehitch attachment bar 104.

Referring to FIG. 6, a side view of an insert bar assembly for ahitch-rack load carrier in accordance with an example embodiment isillustrated. The assembly 100 is shown in non-expanded configuration.The side view of FIG. 6 is taken along a beveled corner running asubstantial length of the body 508 of the attachment bar 104. The body508 of the hitch-attachment bar 104 can be continuously solid along atleast a majority of the length of the hitch-attachment bar 104. Asexplained with reference to FIG. 5, in order to accommodate attachmentof the assembly 100 to a hitch which is larger than the insert portion106 of the bar 104, the assembly 100 includes an expander 500. Theexpander 500 can be arranged to extend and retract relative to anexterior surface (e.g., 502) of the hitch attachment bar 104 in responseto lateral motion of the expander 500 on the bar 104. The expander 500can include a wedge-shaped lower surface 600 that abuttingly rests on aramped exterior surface 602 of the hitch-receiver insert portion 106.When the wedge-shaped surface 600 is moved toward the actuator 506 inresponse to manipulation of the actuator 506 the expander 500 can moveinto a gap between the insert portion 106 and a hitch 150 (not shown).

Referring to FIG. 7, a cut-away side view of an insert bar assembly fora hitch-rack load carrier in accordance with an example embodiment isillustrated. The assembly 100 is shown in a non-expanded configuration.The hitch attachment bar 104 can be predominantly rectangularly shapedat the hitch-receiver insert portion 106 in cross-sections takenperpendicularly to the length of the bar 104. The hitch attachment bar104 has a beveled corner 604 which constitutes a diagonally outwardlyfacing exterior surface 602 upon which the ramped exterior surface 600of the hitch attachment bar 104 is located. In order to enable movementof the expander 500, the leveraging rocker-arm 504 can pivot on a pivotaxis 700 which is substantially parallel to the outward diagonallyfacing exterior surface 502 of the hitch attachment bar 104.Alternatively, the leveraging rocker-arm 504 can be configured to pivotin a plane perpendicular to the diagonally outwardly facing exteriorsurface 502 of the hitch attachment bar 104. The axis 700 can be formedby a pivot axle 702 extending across the hitch-attachment bar 104 andintersecting diagonal corners 514 of the hitch-attachment bar 104 (seeFIGS. 5 and 6). Thus the leveraging rocker-arm 504 can be configured topivot on the pivot axle 702 thereby causing extension of the expander500 into a recess in a hitch assembly on a vehicle (not shown).

Referring to FIG. 8, a side view of an insert bar assembly for ahitch-rack load carrier in accordance with an example embodiment isillustrated. The assembly 100 is shown in an expanded configuration inwhich a lower surface 600 of an expander 500 has been moved relative theattachment bar 104 in order that the expander 500 can adapt the assembly100 to attach to a hitch 150 (not shown) which has a receiving portionwhich is larger in height or width (or both) than the insert portion 106of the assembly 100. As discussed above, the hitch-attachment bar 104 atthe hitch-receiver insert portion 106 can be predominantly rectangularlyshaped in cross-sections taken perpendicular to the length of the bar104. The hitch attachment bar 104 can include a beveled corner 604constituting a diagonal exterior surface (502) which faces outwardly,and on which the ramped exterior surface 602 of the hitch-receiverinsert portion 106 can be located. In at least one embodiment, thehitch-attachment bar 104 at the hitch-receiver insert portion 106 can beshaped substantially like a pentagon in cross-sections takenperpendicularly to a length of the bar 104.

Referring to FIG. 9, a cut-away side view of an insert bar assembly fora hitch-rack load carrier in accordance with an example embodiment isillustrated. As discussed above, the assembly 100 can comprise anactuator 506 for expanding the expander 500 relative the rest of theassembly 100. The manually operable actuator 506 can comprise a threadedbolt 900 which can be threadingly engaged in a threaded receivingaperture 902 perpendicularly extending into the diagonally outwardlyfacing exterior surface (502) of the bar 104. The actuator 506 cancomprise a knob 904 or handle fixed upon the bolt 900. Rotation of theknob 904 in one direction causes advancement of the bolt 900 into thethreaded receiving aperture 902 and rotation of the knob 904 in theopposite direction causes advancement of the bolt 900 out of thethreaded receiving aperture 902. The bolt 900 can be configured toextend through an aperture in the drive arm 512 of the leveragingrocker-arm 504. As shown, the knob 904 can be located on the drive arm512 on an opposite side of the elongate hitch-attachment bar 104. Thelink arm 510 of the leveraging rocker-arm 504 can be pivotally coupledto one end of an elongate extension rod 910 that is coupled at anopposite end to the expander 500.

Referring to FIG. 10, a perspective view of an adapter assembly for ahitch-rack load carrier having an adapter in accordance with an exampleembodiment is illustrated. As illustrated, an adapter assembly 930 foran insert bar assembly 100 of a hitch-rack load carrier which is sizedfor insertion into a 1.25 inch square tubular hitch receiver can beadapted for insertion into a 2 inch square tubular hitch receiver 932.The adapter assembly 930 can comprise an expandable adapter 934 which ismountable upon an elongate hitch-attachment bar 104. The bar can besubstantially square in cross-sectional shape and sized for insertioninto a 1.25 inch square tubular hitch receiver. The assembly 100 caninclude an expander 500 which diagonally extends and retracts relativeto the bar 104. As shown, the adapter 934 can be configured to house orcontain a hitch-receiver insert portion 106 in a collapsed configuration936. The adapter 934 can comprise a main body 938 which has an interiorspace (not shown) defined by at least two substantially perpendicularinterior walls not shown.

Referring to FIG. 11, a perspective view of an insert bar for ahitch-rack load carrier received within a hitch in accordance with anexample embodiment is illustrated. The bar 104 of the assembly 100 isillustrated adaptively attached to a larger square tubular receiver 932(e.g., 150). A pin 102 coupled to the attachment bar 104 is insertedwithin an aperture 160 on a vehicle hitch 150. Thus the carrier (notshown) is releasably coupled to the hitch 150.

Referring to FIG. 12, a cross-section of hitch-rack load carrierreceived within a hitch in accordance with an example embodiment isillustrated. The adapter 934 of the carrier assembly 100 is shown in acollapsed configuration 936. An adapter assembly 930 of an insert barassembly 100 for a hitch-rack load carrier which is designed forinsertion into a 1.25 inch square tubular hitch receiver is adaptablefor insertion into a 2 inch square (or smaller) tubular hitch receiver932. The adapter assembly 930 can contain an expandable adapter 934mountable upon the attachment bar 104 that is substantially square incross-sectional shape and sized for insertion into a 1.25 inch squaretubular hitch receiver. The adapter assembly 930 can comprise anexpander 500 that diagonally extends and retracts in relation to the bar104. The adapter 934 can house a hitch-receiver insert portion 106 ofthe bar 104 in the collapsed configuration 936. The adapter 934 cancomprise a main body 938 which has an interior space (940) defined by atleast two substantially perpendicular interior walls 942 which can bepositioned adjacent to two exterior walls 944 of the hitch-receiverinsert portion 106. The adapter 934 can have an expansion member 946which is coupled to the main body 938 by a coupling 948 that allows forexpansion of the expansion member 946 away from the main body 938,thereby securing the insert bar assembly 100 to the hitch 150. Theexpansion member 946 can partially or wholly shroud the expander 500during extension and retraction of the expander 500. In at least oneembodiment, the coupling that couples the expansion member 946 to themain body 938 comprises an extension finger 950 which projects into aretention space 952 on the main body 938. The extension finger 950 canhave a bulbous tip 954 which can be trapped by a restrictive neck of theretention space 952 on the main body 938.

Referring to FIG. 13, another cross-section of hitch-rack load carrierreceived within a hitch in accordance with an example embodiment isillustrated. In FIG. 13, the adapter 934 is shown in an uncollapsed orexpanded configuration 960 wherein the expander 500 has been laterallytranslated towards the walls of the hitch. The center of the end of theattachment bar 104 remains centered within the hitch 150 in a collapsedconfiguration 936 and an expanded configuration 960. The coupling 948 ofthe adapter 934 that couples the expansion member 946 to its main body938 can comprise an extension finger 950 on the expansion member 946which projects into a retention space 952 on the main body 938. Theextension finger 950 can be configured with a bulbous tip 954 which canbe trapped in the retention space 952 by a restrictive neck in theretention space 952. The coupling 948 can comprise a restrainingtongue-in-groove interconnection 952. A tongue 962 of thetongue-in-groove interconnection 952 can include an extension off of theexpansion member 946 and into a groove 964 formed in the main body 938.Additionally, the tongue 962 is can comprise an elongate fin 966 whichterminates in a bullnose 968 at a distal end of the fin 966.Furthermore, the groove 964 can comprise an elongate track 980 whichends in a necked access slot 982 at a distal end of the track 980.

Example implementations of the technology include an insert bar assembly100 for a hitch-rack load carrier comprising a self-locating securementpin 102. The securement pin 102 can have a tip-fixed position 300 in apin-secured configuration 302. As set forth above, embodiments of theinsert bar assembly 100 can comprise an elongate hitch-attachment bar104 which in turn comprises a hitch-receiver insert portion 106 locatedat an insertable end 114 of the bar 104. The assembly can also include aflexible securement pin 102 or a rigid securement pin 102 coupled to thebar 104 at a fixed distance 110 from the engagement end 112 of the pin102. The assembly 100 can thereby accommodate repetitive, same locationpositioning of the engagement end 112 of the pin 102 (which can be apin-tip 116) at a pin-tip facing surface 120 in the pin-securedconfiguration 302 of the insert bar assembly 100.

In at least one embodiment of the technology, an insert bar assembly 100can include an elongate body 124 of a securement pin 102 having asubstantially uniform cross-sectional area taken perpendicular to alengthwise axis thereof between the engagement end 112 of the pin 102and the location at which the pin 102 is coupled to the bar 104. In atleast one embodiment the elongate body 124 of the securement pin 102 canhave a non-straight lengthwise shape taken along the lengthwise axis ofthe bar 104.

In at least one embodiment of the technology, an insert bar assembly 100houses a lock assembly 202 comprising a cap-cover 204 which can bepivotally mounted to the elongate hitch-attachment bar 104 that, when ina locked configuration 300, shields the coupled end 128 of thesecurement pin 102 from unauthorized contact or access.

In at least one embodiment of the technology, an insert bar assembly 100for a hitch-rack load carrier has a leveraged, diagonally directedexpander 500 for the purpose of securing the insert bar assembly 100 ina rectangularly shaped hitch receiver. The insert bar assembly cancomprise an elongate hitch-attachment bar 104 having a length, width andheight. The assembly 100 can comprise a hitch-receiver insert portion(106) located at or near a lead-in or insertable end 114 of the bar 104.The assembly can also contain an expander 500 which extends and retractsrelative to an exterior surface 502 of the hitch-receiver insert portion106 in response to relative motion of the expander 500 on the bar 104.The assembly 100 can further comprise a leveraging rocker-arm 504 orrocking-arm inter-coupling the expander 500, the hitch-attachment bar104 and a manually operable actuator 506 for configured to move theexpander 500 along the hitch-receiver insert portion 106 in response tomanipulation of the actuator 506. Movement of the expander 500 canenable the assembly 100 to be attachable to hitches of varying size.

In at least one embodiment of the technology, an insert bar assembly 100has a hitch-attachment bar 104 that has a body 508 that is continuouslysolid along at least a majority of the length of the hitch-attachmentbar 104. The assembly can contain an expander 500 having a wedge-shapedlower surface 600 which abuttingly rests on a ramped exterior surface602 of the hitch-receiver insert portion 106. The hitch-attachment bar104 at the hitch-receiver insert portion 106 can be predominantlyrectangularly shaped in cross-sections taken perpendicularly to thelength of the bar 104. The hitch attachment bar 104 can comprise abeveled corner 604 which makes up a diagonally outwardly facing exteriorsurface 502 on which the ramped exterior surface 602 of thehitch-receiver insert portion 106 can be located.

In at least one embodiment of the technology, an assembly 100 cancomprise a leveraging rocker-arm 504 which pivots on a pivot axis 700which can be oriented substantially parallel to the diagonally outwardlyfacing exterior surface 502 of the bar 104. The leveraging rocker-arm504 can contain a link arm 510 located toward the expander 500 from thepivot axle 702. The arm 504 can further contain a drive arm 512 whichmay be coupled to the link arm 510 located on an opposite side of thepivot axle 702 from the expander 500.

In at least one implementation of the technology, the manually operableactuator 506 further can comprise a threaded bolt 900 which can bethreadingly engaged in a threaded receiving aperture 902. The aperture902 can perpendicularly extend into the diagonally outwardly facingexterior surface 502 of the hitch attachment bar 104. The actuator 506can comprise a knob 904 fixed upon the bolt 900. Rotation of the knob904 in one direction can cause advancement of the bolt 900 into thethreaded receiving aperture 902 and rotation of the knob 904 in theopposite direction can cause advancement of the bolt 900 out of thethreaded receiving aperture 902. The bolt 900 can be configured toextend through an aperture in the drive arm 512 of the leveragingrocker-arm 504.

Example implementations of the technology set forth mechanisms by whichan insertable end of a carrier rack assembly can be attached to a hitchwhich is not sized exactly the same as the insertable end of the carrierrack insert bar assembly. At least one implementation of the technologyis an adapter assembly 930 for an insert bar assembly 100 of ahitch-rack load carrier sized for insertion into a first tubular hitchreceiver having a first size but to be adapted for insertion into asecond tubular hitch receiver 932 having a second, larger size. Anadapter assembly 930 can have a main body 938 which is configured tohouse or hold an elongate hitch-attachment bar 104 which issubstantially square in cross-sectional shape and sized for insertioninto a first tubular hitch receiver. The adapter assembly can include anexpansion member 946 coupled or connected to the main body 938 via acoupling 948. The coupling can accommodate or allow for or enableexpansion of the expansion member 946 away from the main body 938thereby enabling an insert bar assembly 100 to be fitted to a hitch witha receiving portion that is larger than that of the insert bar assembly100. In at least one implementation of the technology, an adapterassembly can comprise a first tubular hitch receiver which iscross-sectionally square and has an interior space that is one and aquarter inch square and a second tubular hitch receiver which iscross-sectionally square and has an interior space that is two inchsquare. Other sizing variations fall within the scope of thisdisclosure.

Example implementations have been described hereinabove regardingvarious example embodiments. The example embodiments are intended toconstitute non-limiting examples. The subject matter that is intended tobe within this disclosure is set forth in the following claims.

1. An insert bar assembly for a hitch-rack load carrier comprising asecurement pin having a tip-fixed position in a pin-securedconfiguration, the insert bar assembly comprising: an elongatehitch-attachment bar comprising a hitch-receiver insert portion locatedat an insertable end of the bar; and a flexible securement pin coupledto the bar at a fixed distance from an engagement end of the pin therebyaccommodating repetitive, same location positioning of the engagementend of the pin in the pin-secured configuration of the insert barassembly.
 2. An insert bar assembly for a hitch-rack load carriercomprising a securement pin having a tip-fixed position in a pin-securedconfiguration, the insert bar assembly comprising: an elongatehitch-attachment bar comprising a hitch-receiver insert portion locatedat an insertable end of the bar; and a rigid securement pin resilientlyjoined to the bar at a fixed distance from an engagement end of the pinthereby accommodating repetitive, same location positioning of theengagement end of the pin in the pin-secured configuration of the insertbar assembly.
 3. The insert bar assembly recited in claim 2, furthercomprising: a pin-tip point of contact located on the insertable end ofthe bar; and the engagement end of the pin further comprising a pin-tipthat abuttingly engages the pin-tip point of contact located on theinsertable end of the bar in the pin-secured configuration of the insertbar assembly.
 4. The insert bar assembly recited in claim 2, furthercomprising: a pin-tip facing surface located on the insertable end ofthe bar; and the engagement end of the pin further comprising a pin-tipthat is located proximate to, and distanced from the pin-tip facingsurface in the pin-secured configuration of the insert bar assembly. 5.The insert bar assembly recited in claim 2, further comprising: apin-tip receiver located on the insertable end of the bar; and theengagement end of the pin further comprising a pin-tip matingly receivedin the pin-tip receiver in the pin-secured configuration of the insertbar assembly.
 6. The insert bar assembly recited in claim 5, wherein thepin-tip receiver is a recess into the insertable end of the bar.
 7. Theinsert bar assembly recited in claim 6, wherein an interior surface ofthe pin-tip receiver is complementarily shaped and sized to an exteriorsurface of the pin-tip of the engagement end of the pin.
 8. The insertbar assembly recited in claim 7, wherein the pin-tip of the engagementend of the pin conformance fits within the pin-tip receiver in thepin-secured configuration.
 9. The insert bar assembly recited in claim1, wherein an elongate body of the securement pin has a substantiallyuniform cross-sectional area taken perpendicular to a lengthwise axisthereof between the engagement end of the pin and the location at whichthe pin is coupled to the bar, and the elongate body of the securementpin having a non-straight lengthwise shape taken along that lengthwiseaxis.
 10. The insert bar assembly recited in claim 2, wherein anelongate body of the securement pin has a substantially uniformcross-sectional area taken perpendicular to a lengthwise axis thereofbetween the engagement end of the pin and the location at which the pinis resiliently joined to the bar, and the elongate body of thesecurement pin has a non-straight lengthwise shape taken along thatlengthwise axis.
 11. The insert bar assembly recited in claim 10,wherein the elongate body of the securement pin is bowed outwardly awayfrom the elongate hitch-attachment bar.
 12. The insert bar assemblyrecited in claim 1, further comprising a lock assembly restraining thesecurement pin to the pin-secured configuration thereby preventingunauthorized movement of bar assembly in the pin-secured configuration.13. The insert bar assembly recited in claim 2, further comprising alock assembly restraining the securement pin to the pin-securedconfiguration thereby preventing unauthorized movement of bar assemblyin the pin-secured configuration.
 14. The insert bar assembly recited inclaim 13, wherein the lock assembly comprises a cap-cover pivotallymounted to the elongate hitch-attachment bar that in a lockedconfiguration shields the coupled end of the securement pin fromcontact.
 15. The insert bar assembly recited in claim 2, furthercomprising a biasing member engaged upon the securement pin that biasesthe pin to the pin-secured configuration.
 16. The insert bar assemblyrecited in claim 1, wherein a bar-coupled end of the securement pinextends into an interior space within the elongate hitch-attachment barin which the biasing member is located, the biasing member engaging thebar-coupled end of the securement pin within that interior space. 17.The insert bar assembly recited in claim 15, wherein a bar-coupled endof the securement pin extends into an enclosed space proximate theelongate hitch-attachment bar and in which the biasing member islocated, the biasing member engaging the bar-coupled end of thesecurement pin within that enclosed space.
 18. The insert bar assemblyrecited in claim 2, wherein the rigid securement pin is resilientlyjoined to the bar by a pivotal coupling.
 19. The insert bar assemblyrecited in claim 18, further comprising: a pin-tip point of contactlocated on the insertable end of the bar; and the engagement end of thepin further comprising a pin-tip that abuttingly engages the pin-tippoint of contact located on the insertable end of the bar in thepin-secured configuration of the insert bar assembly.
 20. The insert barassembly recited in claim 18, further comprising: a pin-tip facingsurface located on the insertable end of the bar; and the engagement endof the pin further comprising a pin-tip that is located proximate to,and distanced from the pin-tip facing surface in the pin-securedconfiguration of the insert bar assembly.